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Finding the Fourth Proportional to 328,614.80, 492,922.20 and 216,421.70

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Solution

The fourth proportional to 328,614.80, 492,922.20 and 216,421.70 is: 324,632.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,614.80 : 492,922.20 = 216,421.70 : x
  2. Step 2: Convert to fraction form
    328,614.80/492,922.20 = 216,421.70/x
  3. Step 3: Cross multiply
    328,614.80x = 492,922.20 × 216,421.70
  4. Step 4: Simplify right side
    328,614.80x = 106,679,060,491.74
  5. Step 5: Solve for x
    x = 106,679,060,491.74/328,614.80
  6. Step 6: Final answer
    x = 324,632.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.